Range connector



A. FRIEDMAN RANGE CONNEGTQR Feb. 1, 1949.

Filed Jan. 9, 1946 4 ii'orney RANGE CONNEC'IIQRR J I ArthurFriedman, Shaker Heiggts phio, assigno r;

to Patrol Valve' Company,

corporation of Ohio Application January 9,1946, Serial N. 639,931; 01. I

i My invention relates to tube couplings and concerns particularlyfittings and connectors for flexible-tubing.

It is an object of my invention to provide an im' proved coupling which may be employed for makingconnections quickly with tubing, especially flexible tubing'such as aluminum or copper tubingl for example. l v

,A further object of my invention is to make connections quickly with tubing withoutanynecessity for flaring the tube end.

A further object of the invention is to make gas connections quickly with gas ranges, water heaters, and other apparatus and to connect gas ranges or the like in such amanner that after thefgas', connections have been made, the. range may be 'moved about for cleaning or other purposes, laying of flooring, slight changes of per} manen tposition, etc.

Still another object of the invention is to support firmly the inner and outer side walls of tub ing to be connected.

.A further object is to avoid pipe' cutting,

threading, waste and breakage in making connectio'ns tov gas ranges. t

Still another object of the invention is to make connections to gas lines without any requirement for special tools.

m ni "23 corresponding in thickness to the thickness of ve nt we an fifi l m fl e t n in; order that the range may be moved about forlayinglinoleum; for cleaning purposes, or for;- makingslight-changes in the permanent position; withput opening the gas line. The body l3-is provided with a nippleilil threaded to receive; the;

tube nut l6, and having acounter bore 2| adapted to receive the inner sleeve l4 and the tube end I I.

Thednner .sleeve lll is formed with a flange 22 fitt the internal cylindrical surface of the r bore 2| so as to leave an annular groove the tubing lz. Preferablythe inner sleeve it is of greater length than the counter bored, portion 2| of the body l3 so that the inner sleeve M has a part 24, which provides inner support for a substantial portion of the tube l2 beyond the endof theipple 1 9. 1 i e ring I 5 is provided with outer tapering end 3 ces and 26, and preferably the inner edge Ste .n 2'lgo f the end of the nipple I9 is rounded to pro-,-

' vide an entering spacefor the tapering end 25 ,of;

tii'erihg 15. The ring lihas an internal diameter of such size as to slip easily along the outer sure. aca thatu n H r The tube nut l6 preferablyhas an innertaper I ing jshoulder 28; corresponding tothe tapering;

'Other and further objects, features and advan tag'es ofthe invention will become apparent as the description proceeds.

A'better understanding of the invention will be afforded by the following detailed description considered in conjunction with the accompanying drawing, the singlefigure of which is a longitu: dinal medial sectional view of a tube coupling or connector showing two of the parts disengaged for exposing the interior of the construction.

Thedrawing illustrates a method of quickly making aconnection to the end H of a tube l2 which may be a length of flexible tubingsuch as aluminum or copper tubing, for example. For making a; connection with such tubing, Iprovidein'conjunctionwith the tubing I2 a body l3,

an inner sleeve 14, a tightening ring l5, and a clamping nut I 6.

The body i3 is provided with a bore I'I adapted to form a continuation of the bore of the tubing l2. The body I3 may be connected to or form a part of apparatus having a passageway to which the tubing I2 is to be connected. For example, as illustrated, the body [3 may have a pipe thread l8 adapted to be threaded into the end of a rigid gas pipe or into the manifold or gas line of a movable device, such as a gas range for example. re-

end zfi of the ring liyvhere the outer'end 2610i the, ringrlia is tapered,;but the invention is not limited toprovidingthe tapering surfaces 26 and,

,; 28 enth? Parts !;5 ,and l6, respectively. The tube nut, also, preferably has such an internal diam; eter as t slip easiIy aIQng the tubing l2. It will. be understood that the ring;l5and the'nut '16 hayeibeen shown awayfrom their normal connecting p i ti on in-order to illustrate more clearly the construction; and arrangement of thebody, I3,;-and he inner sleeve l4, and the'mannenin which the tube end ll is'received in the annular grooved}; formed between the inner sleeve I4 and the inner surfacewof the counter bore 2|.

--Wher i;the tube ,l 2 ,is to be connected to the body I3,Preirablythe tube nut I6 and the ring 15 are 'first gslipped'overhthe tube-end ll toaboutthe positions-showmjn thedrawing and the inner;

;,S188V8 I4 is then inserted intothe endof thetube with the flange 22 resting against the end of the tubing. The tube end ll, thus reinforced, is then inserted into the counter bore 2| and the ring I5 is slid forward along the tubing simultaneously with sliding the tube nut l6 forward to cause the i tapering end 25 of the ring l5 to enter a space between the outer surface of the tube l2 and the blunted edge 21 of the nipple I9. The tube nut IE1" is threaded on the nipple H! in order to drive the" inward to'wardsaidsleeve.' Y

between the outer surface of the tubing l2 and the inner surface of the outer end of the counter bore 2| so as to grip the tube end ll tightly between the outer surface of the inner sleeve [4 and the ring I5, which, is, in turn, heldtightly against taiiering ftttieid or blade 25 of the ring 15 the nipple 19 by the nut. I6. Inasmuch .astlie tube I 2 around which the ring I fits is supported inner sleeve l4 extends for some distance into the tube l2, it will be observed that the portion, of the 2. A tube coupling comprising in ombinati oii a body with a counterbore therein, a sleeveadapted to fit within the tube and with a flange fitting in and against the bottom of said counterbore to form an annular space for receiving the end of a tube, and means for grippingtheouter surface of tdbe endf and holdiiig'it against fthefsleeve. tube couplifi'g comprising a body Having a bore therein, the body being counterbored at one at the inner surface by the'inner sleeve I4 and at.

. the outer surface by the ring I5. Anadditional length of the tubing I2 is supported by hejtube' nut l6 so that tendency for breakage of thetubing' l2 orfor any loosening of the joint between the tube l2 and the body I3 is avoided;

The body [3 and the tube nut 5 are o pose of a suitable material such as steel, brass or the like. Preferably; the inner sleeve I4 and the ring I5 are composed of a relati'vely hard material such asbrass, stainless steel, or the like; In this manner a leak-proof; gas-tight J'oi ntis quickly 'an'dfeasily produced without any necessity for special tools, or for pipe-threading, without any 3 danger offbreakage and without requiringtheuse 'ofcement or filling compounds; V I It will [be observed that all parts of the d011- pi ing are relatively simple and easily machined or-"o'therwise produced on'automatie apparatus.-

Thus' theyQ- may be produced inexpensively and acdutaltel'y, 1 e When flexible tubing, such as the 'tubing'l2,

is to be employed for making 'aconnection be- I tween the end of a rigidly installed gas pipe, and

a slightly movable device, such as a'gas range for example, fittings such as thebody l3 are pro vided at the end of the stationary gas pipe and in-the range. The two ends'of a length o'f tubing I2 are then inserted in the two fittings in the mariner already described.v Within the time required for inserting the tubing and drawing up end of the bore to receive a tube; a sleeve dimenr'sioned tofit within the tube and formed with a flange adapted for engagement between the end 'pf. .thef,tube and -the botto m of the counterbore,

W ame t t e flange approximating that of the counterbore so that the flange aligns the sleeve ee'ritrally of the counterbore; a nut threadedly engageable with the body and adapted to flt over the" tube, and a ring on the tube between the tube'nuts; such as the tube nut [6, the range connection is completed. v

While I have described my invention as embodie'din'cOncrete form and as operating in a specificnianner in accordance with the provisions of the' patent statutes, it should be understood" that I donot limit my invention'jthereto since various modifications thereof will suggest theinj selves to those skilled'in the art without departingfromthe spirit of my invention; the scope of which'is set forth-in the annexed claims. 1

-1.' '=A fitting adapted to receive a tube and cornprising in combination a body having a counterbore --therein, a sleeve adapted to fit within" the tube'and with a-flange adapted to fit in'and against'the bottom of said counterbore to form-an annular space to receive the; end of the tube betWeen said sleeve and the inner surface of said counterbore, a tapered ring having a'nt'aperin'g edge adapted to fit in said counterbore, and'a'tube Y nut 'for-drawing said ring. against said counterbore. for-forcing thetapering edge of said ring 5 v the body and nut, the ring being formed with a charnfe'r defining ashalrp edge adapted to enter between the body andtube, compress the tube against the sleeve, and forge the tube and sleeve t6 th o h' er the totjmte -bore, as the hut is 'eh 9 theb d 4 A 'tub'e 1 coupling comprising in combination a body forxnd with a'bo're therein and a shoulder within the bore, thebore being dimensioned -to ive thef'enti er a"tube, a' sleeve adapted to enter thee'nd of the tube and formed a I egda tdto be m i e dh tw h i m the t be and t'he said shouldenl the outer'diarnethe 'flahgle being apliroximatelythe diamf'theb'o're so that the body andsleeve de- 1 an u a s ac r c ive; n of the and means or gripping the outer surface of saidjtub e and forcing it against thesleeve.

5; 'A t'ub coupling comprising a body having a bore therein dimensioned tore'ceive the end of a tilt wi e; shoulder withinftheibore; a sleeve dimensioned to fit withiinfthe tube' and formed witha flange adapted forengagement between the end of the ttj pehna the shoulder; the diameter of the'flange approximating that -ofthe boreso that the flangealigns the sleeve centrally of the borei fand niea'nsfadapted to engage'the tube, compress the tube against the sleeve, and

tube I longitudinally 1901 impinge .the

een the end'of the tube and the shoul- ARTHUR FRIEDMAN.

REFERENCES-CITED references are of record the 

